while 循环中的三个 If 语句

Question

I have three if statements in my while loop that is supposed to ask questions until the question variable is equal to 10.

However I think because I have three if statements is the reason why it is only asking three questions instead. I have tried to use break - which ends my while loop

This is my code:

while question<10: 
user_answer=input(str(random.choice(numbers)) + random.choice(operators) + str(random.choice(numbers1))) 

if operators == '+': 
    expected_answer = numbers + numbers1 
    if user_answer==expected_answer:
        print ('This is correct!') 
        print ("Your score so far is",score,"out of 10") 
        question=question+1 
        time.sleep(2) 
        print ('This is incorrect!') 
        question=question+1 
        time.sleep(2) 

if operators == '-': 
    expected_answer = numbers - numbers1 
    if user_answer==expected_answer: 
        print ('This is correct!') 
        print ("Your score so far is",score,"out of 10") 
        question=question+1 
        time.sleep(2) 
        print ('This is incorrect!') 
        question=question+1 
        time.sleep(2) 

if operators == '*': 
    expected_answer = numbers * numbers1
    if user_answer==expected_answer: 
        print ('This is correct!') 
        score=score+1 
        print ("Your score so far is",score,"out of 10") 
        question=question+1 
        time.sleep(2) 
        print ('This is incorrect!')  
        question=question+1 
        time.sleep(2) 

Answer 1

while question<10: 
   user_answer=input(str(random.choice(numbers)) + random.choice(operators) + str(random.choice(numbers1))) 

   if operators == '+': 
       expected_answer = numbers + numbers1

   if operators == '-': 
      expected_answer = numbers - numbers1

   if operators == '*': 
      expected_answer = numbers * numbers1

   if user_answer==expected_answer:
       score=score+1
       print ('This is correct!')
   else: 
       print ('This is incorrect!')

   print ("Your score so far is",score,"out of 10")
   question=question+1 
   time.sleep(2) 

Can be done much better, mapping the operators and so. I'll let you do it :)

Answer 2

The loop runs less than 10 times because if the answer is correct, the question variable is increased twice. And both messages ("correct"/"incorrect") are printed. Your code needs 'else':

if user_answer==expected_answer:
    print ('This is correct!') 
    print ("Your score so far is",score,"out of 10") 
    question=question+1 
    time.sleep(2) 
else:
    print ('This is incorrect!') 
    question=question+1 
    time.sleep(2) 

But consider to rewrite the whole code as stated by Anton Epikhin!